78566863051270 has 64 divisors (see below), whose sum is σ = 166357470504960. Its totient is φ = 26405947641600.

The previous prime is 78566863051267. The next prime is 78566863051297. The reversal of 78566863051270 is 7215036866587.

It is a super-2 number, since 2×78566863051270² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458350902 + ... + 458522281.

It is an arithmetic number, because the mean of its divisors is an integer number (2599335476640).

Almost surely, 2^{78566863051270} is an apocalyptic number.

78566863051270 is an abundant number, since it is smaller than the sum of its proper divisors (87790607453690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78566863051270 is a wasteful number, since it uses less digits than its factorization.

78566863051270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916873261.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 78566863051270 in words is "seventy-eight trillion, five hundred sixty-six billion, eight hundred sixty-three million, fifty-one thousand, two hundred seventy".